I use the product per the instructions on the box. I went from no, and I mean ,NO nails, to nails as long as I want. Seriously, I now have to file my nails to shorten them. I am not a princess either. Meaning I do housework, home repair, yard work (serious yard work, pruning, trimming, digging , weed pulling ). I do wear gloves but still this is not dainty work. And still my nails are strong and long. Almost ridiculously long. Since I had no nails for quite a while I have let these get a bit too long The product is well worth the price and it does last quite a while if used per instructions. Yes, I would recommend it to a friend. In fact, whenever someone comments on my nails I always tell them about this product and where they can by it.

The OPI maintenance & nail strengthener has really helped my nails. Now they are not breaking and splitting. I wish the maintenance would have a more clear look when using as a top coat, rather than a kind of yellow look. I love these products.

I like all my nails the same length. Before Maintenance Nail Envy, this was impossible. Now with a shorter length, and vigilant use of Nail Envy, my nails always look great and the polish seems to last longer too - a double bonus!

This stuff is great! Yes it's pricey, but it's so worth it. I can tell a big difference in my nails when I haven't used this in a while. My nails feel so much stronger with this and it last even when you don't have it on, your nails are still strong. I got this mostly because of how thin my nails had gotten from getting my nails done constantly, but use it frequently when I do my nails myself at home.